Practice question

David Hendricks Bergey, an American bacteriologist associated with the University of Pennsylvania, pioneered the first consolidated reference for bacterial identification. Chairing the Society of American Bacteriologists committee, he edited the 1923 Manual of Determinative Bacteriology that organized species by determinative traits such as morphology and biochemistry. His systematic approach standardized nomenclature and keys, providing foundation for all later systematic volumes. While Louis Pasteur and Robert Koch established microbiology, and Carl Woese introduced molecular phylogeny, Bergey's compilation alone initiated the manual's enduring legacy as foundational textbook.